Automatic boiler feeder



Nov. 20 1923.

H. E. MALAIER ET AL AUTOMATIC BOILER FEEDER Filed Dec. 6, 1921 2 Sheets-Sheet l aLlocnwa m lfihifrmd 12F 67477; J9

Nov. 20, 1923. 1,475,076

- H. E. MALAIER ET AL I AUTOMATIC BOILER FEEDER Filed Dec. 6, 1921 2 Sheets-Sheet 2 rw 1 i Q m Jwuwfiou mflzazfrzw mhrZJk Patented Nev. 2Q, 1223.

s'rs

TNT

HERMAN E. MALAIER AND FRANK R. CLAY-1K, JE OF ROCK MART, GEORGIA.

AUTOIHATIC BOILER FEEDER.

Application filed December 6, 1921. Serial No. 520,232.

Y '0 all whom it may concern Be it known that HERMAN E. MALAIER and FRANK R. CLARK, Jr., citizens of the United States of America, residing at Rock Mart, in the county of Polk and State of "Georgia, have invented new and useful Improvements in Automatic Boiler Feeders, of which the following is a specification.

The object of the invention is to provide a simple and directly controlled boiler feed mechanism adapted for operation under conditions insuring the maintenance of a substantially uniform depth of water in the boiler and free from exposure to interference in the performance of its functions by collateral conditions of the boiler; and with these objects in view the invention consists in a construction and combination of parts of which a preferred embodiment is shown in the accompanying drawings, wherein Figure 1 is a view partly broken away of a boiler feeding mechanism embodying the invention.

Figure 2 is a sectional view in detail of the feed nozzle.

Figure 8 is a transverse sectional view of the nozzle taken in the plane of the valve.

Figures 4 and 5 are detail sectional views respectively on the planes indicated by the lines tt and 55 of Figure 2.

Figures 6 and 7 are detail sectional views on the planes indicated respectively by the lines 6-6 and 77 of Figure 3.

The apparatus consists of a feed nozzle 10 inserted in the wall or shell of the boiler 11 at any convenient portion of the upperside thereof and provided at an intermediate point in its length which is preferably reduced as indicated to minimize the extent of opening in the wall of the boiler, with a suitable joint 12, said nozzle being of a three-way or three-channel type with its terminals preferably enlarged as shown but with its outer and inner members 10 and 10 consisting preferably of castings of respectively integral construction.

At the enlarged inner end of the inner member there is provided a transverse valve seat 13 in which is fitted a rocking valve 14 or its equivalent, provided with a port 15 for connecting the terminals of two of the passages, 16 and 17 which are designed for use as steam passages and are respectively in communication through pipes 18 and 19 with the steam dome 20 and the valve chest 21 of the pump indicated at 22, suitable cutoff valves 23 and 24 being provided in said pipes. Said valve 1 1 also is provided with a port 26 for establishing communication between the remaining channel 27 and the water outlet 28 of the nozzle, said water channel being in communication by the feed pipe 29 with the pump for the supply of water to the boiler. The valve is controlled by float 30 connected with an arm 31 having a yoke 32 which is terminally attached to the extremities of the valve. When the water in the boiler is at the prescribed level the valve is maintained in the closed position by the position of the float, and when the level of the water in the boiler falls to an extent sufiicient to justify replenishing, the ports of the valve will be opened to establish communication between the steam dome of the boiler through two of the channels in the nozzle and the steam or Valve chest of the pump, and between the pump through the third channel of the nozzle with the outlet 28. Thus a direct control of both the steam and water inlet is effected by a common valve of which the position is determined by the level of the water in the boiler, as distinguished from those conventional types of boiler feeders, where the steam and water pipes leading respectively from the valve chest and the water outlet of the pump communicate respectively with the steam dome and a feed water nozzle terminally submerged in the liquid contents of the boiler, and which latter arrangement is attained in practice with a degree of unce1= tainty of operation which is entirely eliminated by the mutual control of the steam and water channels through the agency of a single valve as herein provided.

Having described the invention, what is claimed as new and useful is 1. A feed water apparatus for boilers having a three-way nozzle provided. with a plurality of steam channels for respective connection with the boiler steam dome and the steam chest of the feed water pump, and another channel in communication with the pump and provided with a water outlet at the inner end of the nozzle, and a float actuated valve for controlling said outlet and the communication between said steam channels.

2. A feed water apparatus for boilers having a three-way nozzle provided with a plurality of steam channels for respective connection with the boiler steam dome and another rangement respectively within and outside of the boiler and being connected by a union 10 adjacent to the Wall of the boiler.

In testimony whereof they. affix their signatures.

HERMAN E. MALAIER. FRANK R CLARK JR. 

